Electric welder.



l. A. OSBORN.

ELECTRiC WELDER.

APPLICATION man :une I7. |913.

191.434,00). i Patented Dee. 14, 1915.

2 SHEETS-SHEET 2.

WTNESSES INVENTOR l oi Constr? n Show.

' obvious mi i;

y @iced ving 1 1 f i n i die memoire eleotioee,

l. T A. oy he hoe x.

oe inoif o e Showing' adjecei 'poiniofis 'm G is Side eeveior of down in "-m. 55 showing the weidef section and on povide in o device of Die above dentiied ci rooeiz, e mi ge Fei omeY *die Shocks and stiaiiis incideiii'zd io device of this kind which device may De i'eediy mmspoyed ein piace to piace by means of am overhang crane or tradi.

iiioher objec of myinvenion is to provide a weideil so eonstiucted aiened duit the heating inoidenmi. Lo the "Wedng operation be contained in a member wiieh zeudiy removed 'and a cold Fetemed Eem member quickly insered in its piace in ing the next weld.

still further object of my inversion is io provide e means for mpidy moving one of Jdie eiecodes iiio engagemen 'Wzn Eile work, and for stiongiy compressngwo e e '@iie crime or evei'hend meek, shown Mouzized upon and foiii'img; of

iaiechanism C, and edeped to be disposed between die eieci'odes is the sepaiaoie iiezi absoibing' member D, all hereinafter imo-ree fuiy desoiibed.

Beseribed more in detail, the oaiage comprises essenieiy e paix of vel'iczdijy' ending", inwmdiy facing and spaced @mi eiiazmel members 8, their Het fao-iig outwnidiy and maintained in iieii apart ieiatioii by means hereinafter moe fully described. Paraiieiing the Channels and having its web disposed im piene paraie to and ineimediate ihe ehamieis is am -beum 9. The upper poitions o iie of superposed vertically spaced apar@ yokes l0, each yoke omed of a pzili of oiimdiggf facing' channel members, one end of each of which is fastened by means of the rves il to the outeil fiat face of one of @ne do@ meis 8 :md each oimnne membe' elite pm'eilei to "che said fiat face for some 4@moe und is bent :it 'i2 and 13 o o face 14, which Het 1ffice is fastened T g, means of rivets l5 to oneace of the web of die 'QI-beam 9. By this constuoiom .ii will be seen that there is formed in eeos e pair of horizontally dsposedyokes in iie for? of Ys, the crotciles or Stemso Whi. are formed by the I-beam 9 and the inside of the outer end of each o the superposed iegs of the yokes is' outlined by one of the ehamels 8.

Resting upon the iower of the yokes 10 is a pair of supporting anges 16, one resting upon each ieg of the yoke and foimngue Citi transformer is disposed between the superposed yolres. The laminated core shell 18 is removable and held to the angle iron 16 by means of spaced bolts 19 fastened through opposite ends of the angle 16 and top bearing angle 20. Disposed slightly below the lower yoke 10 and connecting the opposite ends ot' the head piece 25 constituting part of the bracket B. By this construction it will be noted that the heavy transformer isv disposed above the pivoting line of the carriage, which pivoting line is disposed slightly above the center ot' gravity, thereby permitting an easy swinging oil the carriage on its trunnions. Positioned above, supported 'from and extending parallel with the upper yoke 10 and spaced therefrom by the spacing members 26 is an ilisulating plate 27, extending through which plate and carried thereby are the binding posts 23, to which are attachedn the terminals 29 leading trom which are conductors running to a suitable source of electric energy.

lnsulating plate 27 is a switch board, and mounted thereupon is a series of electric switches, grouliied and connected so that the entire primary winding 31 of the transformer may be energized, or more or less of it out out by throwing certain switches to alter the connections to run to various taps in said primary winding. Thus, the induced current in 'the secondary winding and circuit may have a strength suited to the character of the work to be welded. llhe switch at each end of the group of switches is shown as a single pole, single throw, switch', and the intermediate switches are single pole, double throi f, switches, and each switch comprises the requisite number of contacts and a knife blade 32. TWhatever switches are selected to be in service will be vin circuit with a source of electrical energy,

binding posts 2S and part or all, as required,

l-bcain 9 a short cistance abov the lo'wer end of these copper strips. The portion of the leg 34above the strap k36 and all but the terminal of leg 35 is wound with some suitable insiila g material so as to prevent short circuitine. The terminal of the laminated leg 34 is insulated from the l-bealn 9 .by means ci the insulating strip 37, forining a facing for the space block 33, insulating sleeves and washers, shown at 37a, in Fig. l, insulating bolts from space block 38 and -beani 9.

Positioned on the face of the inner strips 34 facing a cuboidal electrode 43 hereinafter described is a holding bloclc39, which block is fastened to the l-beam 9 by meansv of bolts 40 passing through the block, the leg 34, insulating strip 37, block 38, and bolted through the outstanding flanges to the -beam 9. The holding block 39 has `a centrally disposed aperture or recess `41 therein facing the said cuboidal electrode, adapted to be disposed in which recess 41 is the plug projecting from `the center of the rear tace of the cuboidal electrode *43, this electrode being removably held in placeby means of the binding screw 44, which passes vertically through the block 39 to engage the plug 42. 4To form another electrode, 52, for the Welder, the shaft 45, hereinafter -Inore fully described, terminates in an enlarged head 46'facing the bare laminations 47, at the terminal of leg 35, and abutting the insulating plate 48, which lis interposed bctween said terminal oi leg 35 and head 46. Facing the laminations 47 -on the side opposite the insulating plate 48 is a holding block 49, corresponding to the block 39, fastened to the head 4G by means oi bolts 50, which pass through the'block, laminations 47 and, through the head 46, and isinsulated from the head by means ot the insulating sleeves and washers 51. The electrode 52 is in the torni of a solid cylinder having a stud 53 projecting from its rear face and fitting a centrally disposed aperture in the block 49, the cylindrical electrode 52 being held in place by means of the binding screw 54 passing through the holding block 49 andengaging the stud 53. By this construction it will be noted that the electrodes are spaced a short distance from each other, and adapted to contain therebetween the work which is to be welded, as

is usual with devices of this character, andit will be noted that the leg 35 is flexible so that it is free to swing with the electrode 52.

ln order toieed the cylindrical electrode 52 to and from the cuboidal electrode 43, there is mounted upon and extending outwardly from the lower end of the channels 8 the bracket U, which'bracket comprises pairs of outstanding plates and 72, each plate 60 being riveted to the outer face ot one of the channels by bolts 95, and vconnected at their outer end by means of a face plate 61 disposed therebetween and fastened thereto by means of the vertically spaced bolts 62, journaled within whichplate is a shaft 63, the outer end of which has fiXedly mounted thereon an insulated hand-wheel inceei enel olf 'Wliioli is joui nii/hie. alle beeing plate 66, which also peioines the function of y i'neiiitainingg the channels 8 in en sneeeil i* ieiaiien.,

65 :inl d face @fate @l is jiii on e?, peymeieniiy in iiieii pinion is e geai' Wheel (SS, l 'has a diameter mat iiiaily ce ciianieei' of lie pinion 6T is of a sol'iie '"f i to its en?. joui'naleil in the Corresponding 'so and -posi ieee plaie el, lie plaie il in een, ziie oiiiei' enfls of ehe inner ends of which la# isenecl by ineans of the lools Agnee' e3? Channels 8 below elfjes oelow (2S-S- geai 5o @o eelgaeen seiiew block 75 poenel fastened I groove by me ieeesseoi shaft lieieinoeiiore' ele eits an@ 70 are lield' in posiion i'oeaole relative i:o each other, bn

lone" immovable @l ndinelly relative eo each elief by ineens of 'the pin i8 passing a l5 has a longiu ing slot e0 in the underside tlieeof, n' Y sie; is engaged by the inneil enel of the sei. seiefv 8l inserted lliiongn the lioioni oi" i oioel: 8L, "which block is is posed between and helps o inain'ain .the iowei oit ''.lie criminels 8 iniheii spaced art relation.

.it will loe nnfleisood hzit rotating iie hand-wheel @si will in in'n rotaie elle shaft G3, pinion (37? geai- (38 feeding the slioi't 70 eliiongli the screw block 75 advancing ille sha'i '70 iiansvei'sely of lelie Welder. This movement similarly advances the shaift i5 and zieaelied eylincii'ienl electrode 52 iowaicl e nml from. lie enlooiilal eleeiofle 43.

l has been fonnil in (ievices of this chai acier that the electrodes rapidly become heated, so ilia. i nas been found necessary to provide coolii g means, wliicli cooling 5 means are expensye, cumbersome and fieqnently' ii. iaive,7 especially after the e vice has been in operation for seveial hours. l/Vili iny oiin of Welder l' propose Lo position betweeii lie work and the ouboidal elece erode vreadily iemovable member so that in lie opei'aion of welding, the ieinovable ineinloei, when heated, may be dropped into a bncke'of 'Water and a new ineniloer inser, eel in its piace, and for this purpose have is@ shown e memfbei l), hereinbeiore referred to i shale pa ellols the siizit' into square threadsa heat-absofbing Inemben, Wliieli may ige n lie forni of e eylinei oi: nieial manipuleei by mea-ns oi? the insniaefi. an@ "onge 85. wiil be ninieiseod o" i, oei merely abuis lie Unies ieee 'i eleeirsoie i3 Witliouo being physically y is 'to oe understood in ilie device iiiet 1lie separable menieeA placed position alming die elective and extending i'sowaifl the eleeiode to be welded is inserisci beten ieinovable member D and 'the and by ineens of the kanal-@vlies nienibezs are loiouglit iniio i'iini physical einelectric Contact7 when the cin-Yeni; is on as is usual with devices of this cli iii-texi die desiiecl softening o" lie i Work the liand Wheel is a @urn io positively unite nifl wel@L i toge';

Ten after which the lienelfwli-ee;

ea'efl so separate the electrodes inenioei D ieinoved. and a Cold than that of eitliei of iii The i'esistanee, @glieie'oie7 is gieaei liiough members l) and *Lilie Woili, oi'oilncing a consequent inalinnnm licei at lie point of Welding. So concen/Li'ating; che ieat in menilies piolongs tlie life oi iie elecirodes i5 and 52, foinj es lies been se ioitli, 'liese members may be eqneicly r^- iovecl "to cool imei oiliei's of "ehe saine *effige be snleseituiecl in lie ineiiin.

has beenfound convenient io feinoiee the cai'i'iage A in sonie insi'oanoes eind liis purpose e channel niein'oei' Si is riveted f eacli fece of lie web oi? ilie Ebeani 95 enel foi' a siniilai` reason the yoke inen'ibeis l@ are ceiinec'ed on one .side 'oy ineens of lie eliennel 85S, which oiiannei aons alie angles le) and 20 and is fastened te ine yokes by means. of lie bolis 9G, which 1oelis also cai'iy the spacing sleeves 9i isposefl lJ-eiween die webs oi? the jnxepcefl. Channels oi lie upf pei' und io'i'vei: yoke members l. Chano 88 is :liso pi'ovided to as s position retainer foi the 'i'ansfoiniez ilse Lending to brace one of the channels 8 from one i-loeem 9 and niainiaining lie transfo-imei' in posi tion, is a snbsteniially Ll-shape, metal strap 92, one ouinrned end of which is fasene by nieans of bolts 93 to the unlanged face of the channel 8 and lie opposite oneined end is fastened by means lie iiolfJ Sii "so the web of the -beain 9.

"What claim is:

l. ln an electric Weide?, e fixed eleciode, a coacting electrode 'movable ieieiye 'to said fined electrode, a manually-controlled conductor adapted to loe disposed between said eleeti'odes elecliieallyx eonneciecl Le one of said electrodes, said confluooi Se. physieaily disconnected from the we y PP 'zontally disposed lJ-shaped yokes, a beam connecting the crotches of said yokes, an electrode carried by said beam, an electrode actuating means for a co-acting electrode, a

pair of spaced members paralleling said beam, and each member engaging the inside of a leg of each of said yokes, and a brace disposed between said members, said brace forming part of said electrode actuating means.

8. ln an electric welder, a pair of superposed spaced apart yokes, a transformer carried between said yokes, members connecting said yoke and extending below the same, electrodes carried by said extensions, trunnions aflixed to said members below said transformer, and an overhead' carrying means pivoted to said trunnions.

4. ln a Welder, a -pair of vertically extending supported members, a block spacing said members, a. bracket extending outwardly from said members, a pair of shafts mounted in said bracket, one of said shafts comprising two parts, an electrode carried by one part, said part keyed to said block, a gear wheel carried by the other part, a pinion carried by the other shaft permanently enmeshed withv said gear,` a handwheel carried by said other shaft, whereby the actuation of said hand-Wheel reciprocates said electrode without rotating the same.

` 5. ln a Welder, a supported block, a layer of insulating material facing said block, an electric conductor abuttin said layer, a. front block having a recess t erein bolted to said supported block and electrically connected to said conductor, an electrode havn ing a stud projecting into said recess, and a binding screw carried by said front block maintaining said electrode removably in place.

G. ln a tool of the class described, a pair of spaced electrodes movable relative to each other and connected with -a suitable source of electric energy, said electrodes provided with broad surfaces facing each other, a manually-operated supplementary friction supported electrode of relatively less contact area than said other electrodes adapted to be inserted between one of said electrodes and the work.

7. ln a Welder, a frame comprising a plurality of vertically spaced Y -shaped yokes, a Vertical member connecting the stems of said yokes and extending therebelow, reinforcing members secured thereto, a plurality of vertical members connecting the branches of said yokes, extending therebelow and paralleling the first mentioned member, means connecting said brancli-eonnecting members,

Licence a transformer mounted between said yokes, and leads terminating in welding electrodes connected with but insulated from said vertical members.

8. ln a Welder, a frame comprising a plurale ity of spaced Y-shaped yokes, a member connecting the stems of said yokes and extending beyond said yokes, a plurality of members paralleling said stem-connecting member and connecting the branches of said yokes, a transformer positioned between said yokes, retaining members therefor on opposite sides thereof secured to said frame, and leads from said transformer terminating in welding electrodes and connected with said members which connect the yokes.

9. ln a Welder, a frame comprising a pair of 4spaced yokes, a plurality of rigid members connecting said yokes and extending tlierebeyond, a transformerA positioned b etween said yokes, leads therefrom guided by extensions of said rigid members connecting the yokes, electrodes carried by said leads, and adjusting means carried by some of said rigid members adapted t0 move one of said leads. l

10. ln a Welder, a frame comprising vertically spaced yokes, vertical members connecting opposite ends of said yokes extending therebelow and supporting electrodes, a transformer positioned between said yokes having leads to said electrodes, trunnions secured to said Vertical members depending from opposite ends of said yoke at points slightly above the center of gravityv thereof, and a movable over-headbracket supporting said trunnions.

11. ln combination, yokes, means for connecting said yokes, said means having extensions projecting beyond the'yokes at one f side, a-transformer held between the yokes, electrodes extending in proximity to said extensions and means carried by one of the extensions adapted to move one electrode independently of the other electrode.

12. ln a welder, a frame comprising a plurality of spaced yokes, rigid members connecting said yokes, a transformer secured in position between the yokes, leads extending from the transformer and terminating in welding electrodes, and means carried by one of said rigid members adapted to move a terminal portion of one of said leads independently of another lead.

18. In a Welder, a pair of spaced'yokes, rigid members connecting and spacing said yokes, the said rigid members forming extensions of the yokes, a transformer secured between the yokes and rigid connecting members, secondary leads connected with said extensions, welding terminals coperat ing with said leads and means carried by said extensions adapted to flex one of said leads.

le. ln a Welder, a frame comprising a vrality of spaced yokes having stems and carried by one of said extensions adapted branches, a plurality of members connecting to move said flexible lead. 1o the stems and branches of said yokes and In Witness whereof I have hereunto Set Jforming relatively rigid extensions theremy hand 1n the presence of two Wltnesses.

from, a transformer positioned between said JOSEPH A. OSBORN. yokes, leads from said transformer, one of lVitnesses:

which leads is flexible and each lead termi- YvoNNE H. DU GUAY,

nating in a Welding electrode, and means GEO; W, BROWN.

Copies of this patent may be obtained for ve cents each, by addressing the Commissioner of Patents, Washington. D. C." 

